From 51c3e3f80c7e6c1e8bf704e75bab999f2a8661e9 Mon Sep 17 00:00:00 2001
From: Nico Weber <thakis@chromium.org>
Date: Wed, 30 Jun 2021 14:49:00 -0400
Subject: [PATCH] [gn build] (manually) port f617ab104451 (DoublerPlugin)

---
 .../secondary/llvm/unittests/Passes/BUILD.gn  | 35 +++++++++++--------
 1 file changed, 20 insertions(+), 15 deletions(-)

diff --git a/llvm/utils/gn/secondary/llvm/unittests/Passes/BUILD.gn b/llvm/utils/gn/secondary/llvm/unittests/Passes/BUILD.gn
index fd0e19a50ab7..ce7acf1344c4 100644
--- a/llvm/utils/gn/secondary/llvm/unittests/Passes/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/unittests/Passes/BUILD.gn
@@ -3,23 +3,25 @@ import("//llvm/utils/unittest/unittest.gni")
 # Keyed off LLVM_ENABLE_PLUGINS in the CMake build, which is usually false
 # on Windows and true elsewhere.
 if (host_os != "win") {
-  loadable_module("TestPlugin") {
-    # Put plugin next to the unit test executable.
-    output_dir = target_out_dir
+  foreach(plugin, ["TestPlugin", "DoublerPlugin"]) {
+    loadable_module(plugin) {
+      # Put plugin next to the unit test executable.
+      output_dir = target_out_dir
 
-    sources = [ "TestPlugin.cpp" ]
+      sources = [ "$plugin.cpp" ]
 
-    deps = [
-      # TestPlugin doesn't want to link in any LLVM code, it just needs its
-      # headers.
-      "//llvm/include/llvm/IR:public_tablegen",
-    ]
+      deps = [
+        # TestPlugin doesn't want to link in any LLVM code, it just needs its
+        # headers.
+        "//llvm/include/llvm/IR:public_tablegen",
+      ]
 
-    if (host_os != "mac" && host_os != "win") {
-      # The GN build currently doesn't globally pass -fPIC, but that's
-      # needed for building .so files on ELF.  Just pass it manually
-      # for loadable_modules for now.
-      cflags = [ "-fPIC" ]
+      if (host_os != "mac" && host_os != "win") {
+        # The GN build currently doesn't globally pass -fPIC, but that's
+        # needed for building .so files on ELF.  Just pass it manually
+        # for loadable_modules for now.
+        cflags = [ "-fPIC" ]
+      }
     }
   }
 }
@@ -38,7 +40,10 @@ unittest("PluginsTests") {
   # Otherwise, reconfiguring with plugins disabled will leave behind a stale
   # executable.
   if (host_os != "win") {
-    deps += [ ":TestPlugin" ]
+    deps += [
+      ":DoublerPlugin",
+      ":TestPlugin",
+    ]
     defines = [ "LLVM_ENABLE_PLUGINS" ]
   }